Question

If a 30N net force acts on a 20kg object for 5s how fast will the object be moving at the time and how far will it have traveled?

Answer 1

F=M*A

30N=(20kg)*A

30/20= 1.5

Acceleration=1.5ms^-2

then plug that into this equation

S=UT+1/2AT^2

S=0(5) + 1/2(1.5)(5)^2

S=18.75meters

18.75 is the distance traveled in 5 seconds

now to solve for velocity

Vf=Vi+AT

Vf=0+(1.5)(5)

Vf=7.5m/s^-1

7.5m/s^-1 is the velocity at 5 seconds